Ekonomi darwinian : naturalisme sebagai ontologi ilmu sosial dan budaya = The darwinian economics naturalism as the ontology of humanities and social sciences

Adorno's polemic against heidegger : a reconstruction of an intelectual dispute in 20th century Germany

Sistem ontologi E-Learning berbasis semantic Web

Ontologi atau metafisika umum: filsafat pengada dan dasar-dasar kenyataan

Talks on philosophy